Reference number
ISO/IEC 15051:2003
International Standard
ISO/IEC 15051:2003
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Recall supplementary service
Edition 2
2003-04
Read sample
ISO/IEC 15051:2003
36850
Published (Edition 2, 2003)
This publication was last reviewed and confirmed in 2017. Therefore this version remains current.

ISO/IEC 15051:2003

ISO/IEC 15051:2003
36850
Language
Format
CHF 96
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The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site

Abstract

ISO/IEC 15051:2003 specifies supplementary service Recall (SS-RE), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574.

SS-RE is a supplementary service which provides for the redirection of a call transferred by the served user back to the served user if the call is unanswered. SS-RE is only applicable after transfer by join, not after transfer by rerouteing.

Service specifications are produced in three stages, according to the method described in ETS 300 387. ISO/IEC 15051:2003 contains the stage 1 and stage 2 specifications of SS-RE. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) identifies the functional entities involved in the supplementary service and the information flows between them.

General information

  •  : Published
     : 2003-04
    : Close of review [90.60]
  •  : 2
     : 14
  • ISO/IEC JTC 1/SC 6
    33.040.35 
  • RSS updates

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